It looks like Californians won't vote on a proposal to split up the state in November.

The state's supreme court blocked the Cal 3 initiative from appearing on the ballot.

The proposal received enough signatures to secure a ballot spot, but the court questioned the proposition's validity. It wrote, "We conclude that the potential harm in permitting the measure to remain on the ballot outweighs the potential harm in delaying the proposition to a future election."

Previous proposals have aimed to split up California or even have the state secede from the U.S. But even if voters approved the three Californias plan in November, it still would have been subject to congressional approval.